fix dropmessagestest DROPPING bug
fix dropmessagestest DROPPING bug

Signed-off-by: ranger.shi <ranger.shi@gmail.com>

Former-commit-id: a898d37d24c1aa2715a7d385e2ba9dee187279a4
SoyPay/dacrs,SoyPay/dacrs,SoyPay/dacrs,SoyPay/dacrs